<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <div>父组件</div>
        <div>
            <button @click="handle">销毁</button>
        </div>
        <test-tom></test-tom>
        <test-jerry></test-jerry>
    </div>
    <script src="../vue.min.js"></script>
    <script>
        //提供事件中心
        var hub = new Vue();

        Vue.component('test-tom', {
            data: function () {
                return {
                    num: 0
                }
            },
            template: `
                <div>
                    <div> TOM:{{num}}</div>
                    <div>
                        <button @click='handle'>点击</button>
                    <div>
                </div>
            `,
            methods: {
                handle: function () {
                    //触法兄弟组件的事件
                    hub.$emit('jerry-event', 2)
                }
            },
            mounted() {
                //监听事件
                hub.$on('tom-event', (val) => {
                    this.num += val
                })
            },
        });
        Vue.component('test-jerry', {
            data: function () {
                return {
                    num: 0
                }
            },
            template: `
                <div>
                    <div> JERRY:{{num}}</div>
                    <div>
                        <button @click='handle'>点击</button>
                    <div>
                </div>
            `,
            methods: {
                handle: function () {
                    //触法兄弟组件的事件
                    hub.$emit('tom-event', 1)
                }
            },
            mounted() {
                //监听事件
                hub.$on('jerry-event', (val) => {
                    this.num += val
                })
            },
        })
        var app = new Vue({
            el: '#app',
            data: {

            },
            methods: {
                handle: function () {
                    hub.$off('tom-event');
                    hub.$off('jerry-event');
                }
            }
        })
    </script>
</body>

</html>